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Punit Fasteners is a leading stainless steel 309/309S stud bolts exporter, meeting domestic and international standards. Our stud bolts are available in various sizes, grades and finishes, designed to suit different industries’ requirements. We offer these high-quality fasteners at competitive prices, ensuring exceptional application performance and reliability.
Punit Fasteners, with its headquarters in Delhi, India, is a reliable manufacturer and supplier of Stainless Steel 309/309S Stud Bolts, designed with high performance capability in corrosive and high-temperature conditions. With high strength, resistance to oxidation, and corrosion resistance, our 309/309S stud bolts are most suitable for furnace components, heat exchangers, and industrial equipment exposed to high-temperature conditions. We provide products meeting international standards through rigorous quality inspections and extensive documentation. With an emphasis on reliability and customer delight, Punit Fasteners offers fastening solutions that offer optimum performance, structural stability, and long life in critical industrial applications.
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 24 |
Nickel, Ni | 14 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Carbon, C | 0.20 |
Phosphorous, P | 0.045 |
Sulfur, S | 0.030 |
Properties | Metric | Imperial |
Tensile strength | 620 MPa | 89900 psi |
Yield strength (@ strain 0.200%) | 310 MPa | 45000 psi |
Izod impact | 120 – 165 J | 88.5 – 122 ft-lb |
Shear modulus (typical for steel) | 77 GPa | 11200 ksi |
Elastic modulus | 200 GPa | 29008 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 45% | 45% |
Hardness, Brinell | 147 | 147 |
Hardness, Rockwell B | 85 | 85 |
Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless steel 309/309S stud bolts are ideal for high-temperature corrosive environments, due to their excellent oxidation resistance. It is commonly used in industrial applications such as furnace components, heat exchangers and air filters where extreme temperatures are common. Their durability and resistance to scaling make them suitable for use in petrochemical, power, and chemical plants. Furthermore, they are used in high-temperature machines and equipment where power and reliability are critical for long-term operation.
Stainless Steel 309/309S Stud Bolts are manufactured from an austenitic stainless steel alloy with a composition of 24–26% chromium and 13–17% nickel. This composition provides resistance to oxidation, scaling, and corrosion up to 1,100°C (2,012°F). These bolts possess great tensile strength, creep resistance, and thermal stability in addition to good weldability and ductility. The 309S type contains reduced carbon levels, minimizing weld sensitization risk. Such characteristics make 309/309S stud bolts most suitable for high-heat applications that demand reliable performance, strength, and extended service reliability under thermal cycling and corrosive exposure
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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